UKHSA warns of rise in Mexico parasite infections

British holidaymakers returning from Mexico face increased risks of cyclospora infections, according to the UK Health Security Agency (UKHSA). The agency reported a significant increase in these infections and expects more cases to emerge during the peak summer holiday period. The parasite affects the stomach and intestines and is typically spread through the consumption of contaminated food.

Data released by the UKHSA shows that 67 cases were documented in Great Britain between 30 April 2024 and 15 July 2024. Of these, 30 cases occurred in England, 27 in Scotland, and 10 in Wales. For 52 of the infected individuals, travel details were available. Forty-eight of those people had recently travelled to Mexico, while one of that group also visited the United States. Other cases involved travel to Kenya and the United States alone.

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Risks for holidaymakers

Those infected from Mexico had stayed at various hotels in the Cancún and Riviera Maya regions. Many were on all-inclusive breaks and reported eating a variety of food and drink. The UKHSA noted that the parasite is often found in fresh herbs, salad leaves, and soft fruits. It cannot be passed from one person to another.

Symptoms of the infection include nausea, bloating, stomach cramps, and frequent watery diarrhoea. Patients may also experience weight loss, fatigue, or a low-grade fever. While most people recover within a few days, those with compromised immune systems might require antibiotics to treat the condition.

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Hygiene advice for travellers

“Travellers to Mexico and other areas where the infection is more common can reduce their risk by following good food and water hygiene measures, including drinking bottled water and eating thoroughly cooked food, even when staying in high-end all-inclusive resorts.”

Dr Philip Veal, Consultant in Travel Health at UKHSA

Health experts suggest that travellers avoid eating unpeeled fruit, salad items, and fresh uncooked herbs or berries. The UKHSA is working with the National Travel Health Network and Centre (NaTHNaC), Mexican health authorities, and ABTA to investigate the surge. If a traveller develops symptoms after returning from abroad, they should inform their doctor of their recent travel history.